Brake mechanism for track belts



June 9, 1925.

A. KEGRESSE BRAKE MECHANISM FOR TRACK BELTS Filed Jan. 16, 1923 2 Sheets-Sheet 1 INVENTOI:

#2 1 A fen 0 8y 6/ ATTORNEY June 9, I925.

AQ KEGRESSE BRAKE u'ncixamsu FOR TRACK saws 2 Sheets-Sheet. 2

Filed Jan. 16,- 1923 ATTORNEY" ible track belt, 14 of the tinuous' rib,

The section 1; constitutes the retarding member of the wheel, and

Patented June 9, 1925.

UNITED STATES .ADOLPHE KE'GRESSE, orrAR-Ts, rnancn.

BRAKE MECHANISM roa TRACK BELTS.

Application filed January 16, 1923. Serial No. 613,031.

To all whom it. may concern:

Be it known 'that' I, AnoLm-In Kr'zcnnssn, a citizen of the Republic ofFrance,1'esiding at Rue Balard,'-Paris, Seine, France, have invented certain new and useful Improvements in Brake Mechanism for Track Belts, of which the following is a specification.

The present invention relates to brake mechanism for track belts, and more particularly to the endless type of belt which is guided internally during its movement and on which a frictional driving action is exerted; the object of the invention being the provision of improved means or devices for effecting braking in such a way as to com.- pletely avoid slippage of the belt on the retarding pulley. v r

An embodiment of the invention is illustrated in the accompanying drawings, wherein Figuresv 1 and 2 are, respectively,

a vertical cross-section and a part-sectional side elevation of the improved brake.

.In said drawings, 1 and 5 indicate the two ,coacting halves of sections of a supporting-wheel or pulley for an endless, flexgeneral type shown and described in myPat'ent No. 1,480,078, granted January 8', 1924; such belts comprising a central, interiorly-located longitudinal projection of trapezoidal sectionwhich may take the form of a single conas herein indicated at13.

on it is mounted the brake drum 2; the latter having disposed within it, as usua1,'the brake shoes 3 which'are caused to bear against its inner surface in the ordinary manner by means of the lever 4. But it will be understood that the brakeshoes can be positioned to operate directly'upon the wheelsection, instead of being disposed within a drum, without alteringin any way the essential feature of the invention. 1 g

The outer half-wheel or pulley 5'is connected to the inner or retarding section 1 through the intermediary of a device comprisingtwo incline-d annular clutch or cam members 6 and 7 which coact with each illustrated in Figs. 9 and 12 of my aforesaid patent. The member 6 is fixed to the hub 8 of section 1.- by means, of screws 9 and shearing. blocks 10, and the other memher 7 is similarly fastened to a hub 11 con- 1 said .members bring the together, thereby increasing in a perfect action which they -7 other and are generally analogous to those nected with the section 5, by means of screws (not shown) and'shearing blocks 12. The velnclebeing in motion, if the brake is operated, the action of the brake shoes on the drum 2 will tend to slow down the wheel or pulley section 1 but the section 5, which is driven bythe belt, will have a tendency to continue its movement. This continued movement tends her 7 relatively to the member 6, with the result that the coacting inclined surfaces on two pulleys closer manner the gripping conjointly exert upon the interposedbelt rib 13.

I claim as my invention:

'1 The combination, with a supporting 7 wheel or pulley fora-n endless, flexible track belt, comprising a air of spaced, companion sections adapted to grip between them a centrallongitudinal projection on the inner surface of the belt; of a. brake operative on one-of said, sectionsto retard its rotation;

con-

and a device operative automatically sequent upon the actuation of said brake to effect a relative approaching movement as between said, sections and ,thereby increase the gripping action exerted on'the interposed belt projection.

' 2. The combination, with a supporting wheel or pulley for an endless,'flex-ible track belt, comprising a. pair of spaced, companion sections adapted to grip between them a central longitudinal projection on the inner surface of the belt; of a brake operativeon one of said sections to retard its rotation; anda device operated automatically by the traction bf the. belt upon the other section when the brake is actuated, to effect a relative approaching movement as between said SGCCIOHS and thereby increase the gripping action exerted on the interposed belt projection.

3. The combination, with a supporting wheel or pulley for an endless, flexibletrack belt, comprising a pair of spaced, companion-sections adapted to grip between them a central longitudinal projection oncthe in-.

nor surface of the belt of a brake operative on one of said sections to retard its rotation; and a pair of members, one associated with each section, having coacting inclined surfaces, one of said matic'ally shifted relatively to the other consequent upon the actuation of thelbrake to to rotate the annular memmembers being autoforce one of the wheel sections toward the other so as to increase the gripping action exerted on the interposed belt projection.

4. The combination, with a supporting 8 wheel or pulley for an endless, flexible track belt, comprising a pair of spaced, companion sections adapted to-grip between them a central longitudinal projection on the inner surface of the belt; of a brake operative 10 on one of said sections to retard its rotation;

and a pair of members, one associated With each section, having coacting inclined surfaces, one of said members being rotated a11- tomatically relatively to the other member by the traction of the belt upon the other wheelsection when the brake is actuated, ,therebyto force one wheel section toward whereof I affix my signa- ADOLPHE KEGRESSE. 

